OfficeWeb
Free open-source office suite that runs 100% in your browser
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Alexander Dennhoven

OfficeWeb - Free open-source office suite that runs 100% in your browser

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OfficeWeb: A free, open-source, browser-based office suite. No downloads, installs, sign-ups, or cloud storage required. - Writer: WYSIWYG word processor; HTML/text export. - Calc: Spreadsheet with formulas and cell formatting. - Impress: Slide builder with themes and presentation mode. - Notes: Notebook-style task lists and note-taking. The ultimate privacy-focused tool for instant productivity on any device.

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Alexander Dennhoven
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I built OfficeWeb because I wanted a lightweight, privacy-first alternative to cloud office suites. Every popular option either requires an account, stores your files on remote servers, or costs money. I wanted something you could open in any browser, start writing immediately, and never worry about your data leaving your device. The approach started simple – a plain contenteditable div with some formatting buttons – and grew organically into a four-app suite: Writer, Calc, Impress, and Notes. The hardest part was keeping everything vanilla (no frameworks, no bundlers) while still delivering a polished, responsive UI. Adding full EU localisation (24 languages) was a fun challenge that pushed me to design a clean i18n system from scratch. If privacy and simplicity matter to you, give OfficeWeb a try – I'd love to hear what you think!